The MMBT3906T from FrelTec is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage 0.65 to 0.95 V, Collector Base Voltage -40 V, Collector Cut off Current -50 nA, Collector Emitter Breakdown Voltage -40 V. Tags: Surface Mount, PNP Transistor. More details for MMBT3906T can be seen below.